- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述:具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 PWM 控制器
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The LM5026 PWM controller contains all of the features necessary to implement power converters utilizing the active clamp and reset technique with current-mode control. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp and reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay, PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output capability, precision reference, and thermal shutdown.
- Current-Mode Control
- Internal 100-V Start-Up Bias Regulator
- 3-A Compound Main Gate Driver
- High Bandwidth Optocoupler Interface
- Programmable Line Undervoltage Lockout (UVLO) With Adjustable Hysteresis
- Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
- Programmable Overlap or Deadtime between the Main and Active Clamp Outputs
- Programmable Maximum Duty Cycle Clamp
- Programmable Soft-Start
- Leading Edge Blanking
- Resistor Programmed 1-MHz Capable Oscillator
- Oscillator Sync I/O Capability
- Precision 5-V Reference
- Topology
- Active-Clamp Forward,
- Duty cycle (Max) (%)
- 80
- Supply voltage (Max) (V)
- 15
- UVLO thresholds on/off (V)
- Programmable/1.25V
- Features
- Current Limiting, Dead Time Control, HV Start-up, Leading Edge Blanking, Programmable Max Duty Cycle, Programmable Soft Start, Supports NFET Clamp, Supports PFET Clamp, Synchronization Pin
- Operating temperature range (C)
- -40 to 125
- Rating
- Catalog
- Frequency (Max) (kHz)
- 1000
- Gate drive (Typ) (A)
- 3
LM5026的完整型号有:LM5026MT/NOPB、LM5026MTX/NOPB、LM5026SD/NOPB、LM5026SDX/NOPB、LM5026MT,以下是这些产品的关键参数及官网采购报价:
LM5026MT/NOPB,工作温度:-40 to 125,封装:TSSOP (PW)-16,包装数量MPQ:92个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM5026MT/NOPB的批量USD价格:1.386(1000+)
LM5026MTX/NOPB,工作温度:-40 to 125,封装:TSSOP (PW)-16,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网LM5026MTX/NOPB的批量USD价格:1.155(1000+)
LM5026SD/NOPB,工作温度:PropertyValue,封装:WSON (NHQ)-16,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM5026SD/NOPB的批量USD价格:1.386(1000+)
LM5026SDX/NOPB,工作温度:PropertyValue,封装:WSON (NHQ)-16,包装数量MPQ:4500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM5026SDX/NOPB的批量USD价格:1.155(1000+)
LM5026MT,工作温度:-40 to 125,封装:TSSOP (PW)-16,包装数量MPQ:92个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM5026MT的批量USD价格:1.79(1000+)
LM5026EVAL — 有源钳位电流模式 PWM 控制器
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此正向转换器参考设计专为隔离式 60W、12V 中间总线电压轨而设计。它在 9V 至 60V 的宽输入范围内工作。该设计采用 LM5026,这是 100V 有源钳位电流模式 PWM 控制器。采用具有 UCC27511 4A 和 8A 驱动器的自驱动次级整流器,以实现高效率。可用于需要高效率和断续保护的隔离电源应用。PMP11478 — 30W 有源钳位正向转换器参考设计
PMP11478 是一种隔离型有源钳位正激式转换器,接受 24-36V 电压范围,并提供 12V@2.5A 输出。此设计使用 LM5026 有源钳位电流模式控制器。采用 LMV431 并联稳压器和光耦合器反馈来维持输出电压调节。借助肖特基整流器可使用输出电容器存储的电荷实现 2.5ms 滞留。隔离电压为 2250 VDC,满足基本隔离要求。PMP7895 — 12V+/-10% 输入电压、12V 输出电压/1A 有源复位反激转换器参考设计
PMP7895 是一种有源复位反激式转换器参考设计。此设计接受 12V+/-10% 输入电压,可实现 12V 输出,并且能够为负载提供 1A 电流。